USB Sensor Node

flux

Placement is complete: USB/power is grouped on the left/lower-left, DDS and low-level analog are central, and the output amplifier sits behind the right-edge BNC. I’m checking and tightening any remaining decoupling-placement issues now.
Created a project doc
PCB Layout Review — Programmable Function Generator
Board outline set to 100 mm × 80 mm with 2 mm rounded corners. Stackup set to 4 copper layers for USB, SPI, analog output, and multi-rail po...
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flux

PCB layout placement is complete on a 100 × 80 mm, 4-layer board: USB/power is on the left, LT3471 power is lower-left, DDS/control/conditioning are central, and the THS3091/BNC output is on the right. I ran placement, DRC, and BOM checks; details are captured in PCB Layout Review.
Open items:
  • Board is not routed yet, so airwires are expected.
  • DRC still reports exposed-pad footprint copper overlap on U3, U6, and U10.
  • Generic resistors/capacitors/inductors still need final orderable MPNs for assembly.
Suggested next steps:
  1. Repair or replace U3/U6/U10 exposed-pad footprints.
  2. Assign real MPNs/packages to generic passives and inductors.
  3. Route the PCB, then re-run full DRC.
Fix footprints and BOM
Fix footprint overlaps
Assign passive MPNs
Route the PCB
Run full checks
X1 OUT - U5 MCLK
U4 PA5 - U5 SCLK
U5 VDD - C7 P1
U4 PA7 - U5 SDATA
U5 CAP/2.5V - C9 P1
U5 VDD - C7 P1
U5 COMP - C10 P1
U5 VDD - C7 P1
U5 VOUT - R17 P1
U4 PA4 - U5 ~FSYNC
U5 AGND - C7 P2
U5
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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  • Generic Capacitor
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  • Generic Resistor
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Programmable Function Generator

Programmable Function Generator thumbnail
Programmable 1 Hz–1 MHz function generator PCB with sine, triangle, and adjustable-duty square outputs, programmable amplitude up to ±10 V using a DDS-based signal path and protected power rails.

Properties

Properties describe core aspects of the project.

Pricing & Availability

Distributor

Qty 1

Arrow

$36.81–$51.23

Digi-Key

$20.00

HQonline

$22.03–$22.05

LCSC

$57.46–$57.88

Mouser

$67.08

TME

$10.80

Verical

$25.68–$47.67

Controls